Regulator for feed-water heaters.



J. 0. THIEL.

REGULATOR FOR FEED WATER HETEBS.

I2 SHEUSSHEET l.

A TTOR/VEVS J. 0. THiL.

REGULATOR FoR FEED WATER HEATERS.

i APPLICA'HON FILED IULY 3. 1914. l4;6966

mma

WlT/VESSES JOHN OSCAR THIEL, NEWBURG, MISSOUBIL' Speoiication of Letters Patent.

,Patented muy 1a, aars.l

Application tiled July 3, 1914. Serial No. 848,760.

To all whom t may concern:

Be it known that I, JOHN O. THIEL, a4 citizen of the United States, and a resident of Newburg, in th'ecounty of Phelps and State of Missouri, have invented a new and Improved Regulator Jfor Feed-Water Heaters, of which the following is a full, clear, and'exact description.

My invention relates to regulators or controllers for feed-water heaters, and has reference more particularly to a device which will automatically cut off the supply of the feed-water heating medium when the temperature of the water has risen abovea predetermined one, or which will automatically feed into. the water the said medium when the temperature of the water has fallen below a predetermined point. The device is also adapted to regulate the temperature of the feed-water relatively to the surrounding temperature.

An object of the invention is to provide a simple, eiiicient and convenient controller for feed-water heaters which is automatic in its action and which is so arranged that anyl mishap will place the feed-water heater into the safety position. l

. uWith the above and other objects in view, the nature o1 which will more fully appear as the description proceeds, the invention consists in the novel construction, combination and arrangement of parts as herein fully described, illustrated and claimed.

ln the accompanying drawings, formingl part of the application, similar characters of reference indicate corresponding parts in all the views, and Figure 1 is an embodiment of my invention as applied to a locomotive; Fig. 2 is an enlarged elevated view ot the regulator; Fig. 3 is a similar view showing the regulator in a different position, that is. the supply of the heating medium is cut oli by the controller; and Fig. 4 is a detail View of the valve for adjusting the machine.

Referring to the drawings, 5 represents a water tank provided at th'l bottom thereof with a shallow chamber G extending substantially over the entire bottom of the tank. The chamber 6 has an inlet 7 connected to the exhaust pipe 8 of the pump 9 by a two- Way valve 10, the crank 11 of which is connected to a piston rod 12 of an air cylinder 13 by a connecting rod 14.

The valve 10 is maintained in inoperative position by a coil spring 15 mounted on the piston rod 12 within the cylinder 13, as indicated in Fig. 3. The piston 16 within the cylinder is moved by compressed air flowing from a suitable source through a conduit 17 and for which two valves 18 and 19 are provided. Between said valves a bracket 20 is mounted 'forming a support for a centrally pivotcd arm 21 the ends of which engage the valves 18 and 19. The arm 21 has a central extension 22 engaging a socket 23 of a member 21 which is pivotally connected to a lever 25.V The lever is, in turn, pivotally connected to a standard 26 carried by a float 27, the float 27 being mounted in a tank 28 which is in communication with Aa closed tank 29 and which tank 29 forms an air chamber to be influenced by the surrounding atmosphere. The expansion or contraction of the air within the chamber of the tank 29 will vary the position of the float within the tank 28 and, therefore, the position of the lever 25. 1t will be noted that when the iioat 27 moves the lever 25 moves therewith on the pivot connecting the lever 25 to the member 24.

Positioned within the tank 5-.is an air chamber' 30 Vwhich is connected to an airtight receptacle 31 by a conduit 32. The air-tight receptacle 31 is preferably coneshaped, and Within this receptacle 31 bellows 33 are provided, the lower edge of the bellows being clamped to the bottom of the receptacle 31, while the upper edge, which is free to move, is provided with a rigid member 34 from which a rod y35 extends through the bottom of the receptacle 31. The projecting end of said rod 35 engages the end of the lever 25 extending from the member 24.

When the temperature of the water within'the chamber 5 falls below a predeter mined point, the air within the chamber 3() contracts and the air within the bellows 33 expands, raising the member 34 and therelever 25 is -pressed air.

with the rod 35.

reduce the resistance to the spring 36 the' i with a counterweight v 3T. This moyempt of the lever 21 actuates provided the valve 1l andlthe action cuts off the connection of "p e conduit 17 `from the atmosphere and" establishes comrnunication between the conduit 17 and the conduit 38 which leads to a suitable supply of com- 'I'he action ofthe spring 36 also opens the valve 19 (see Fig. 2). The compressed air entering thev cylinder 13 will move the piston 1 6, causing the movement of the valve 10; thus, the exhaust steam from the pump 9 will be switched from the smoke stack to the chamber 6 .in the water tank 5. The passage of the exhaust steam through the chamber 6 will raise the ternperature of the water and the air-in the air chamber 30 will expand, causing the bellows 33 'to collapse, thus forcing the rod 35 out of the receptacle 31. The end of the rod 35 coming in engagement with the lend of the lever 25 will operate the same and cut oil" the supply of exhaust steam. The distance between the end of the rod 35 and the end of the lever 25 depends on the po- -of the device is obtained whereby the temperature of the water within the tank 5 is` controlled relatively to the atmosphere..The

conduit 32 is provided witha valve 39, the object of which is to adjust the machine.

It will be seen from the drawings that if any leak of air shoul occurin any partpf the device formed by t e air tank, air recep- Asition of the float 27 within the tank 28 and vfluenced by desire to have'it understood that the device shown is merely illustrative and that such changes may be made when desired as are within the scope of the appended claims.

Having thus described my invention, I I

claim as new and desire to secure by Letters Patent:

1. In a device of the class described, a p

water tank, means for supplying heat to the tank whereby the water is heated, compressed air operable means for turning the heat on or ofi from the water in the tank, bellows inclosed in the air chamber, part of the said chamber beingassociated with the water in the tank whereby by a change of temperature of the watery said bellows are adapted to be actuated; a system of levers connecting said bellows with said compressed air operable means and through the medium of which said bellows are. adapted to place said means in operative or in inoperative position, and means associated with the system of levers adapted to be inthe' atmospheric temperature whereby the action of said bellows on said compressed air operable means may be accelerated or retarded.

2. In a device of the class described, a water tank, an air chamber in the' tank, a. steam supply associated with the tank for heating the water therein, compressed-airoperable means' controlling the supply o steam to the tank, a second air chamber associated with the air chamber in the tank, bel- -said compressed-air-operable means in opertacle 31, conduit 32 and the bellows 33, the rod 35 will move to the operative position j and place the device into safety position,

that is, -cut olf the supply of'e'xhaust steamA tothe chamber 6.

lIt is evident that the valves 18 and 19, receptacles 28, 29 and 3D, and the system of. leverage associated therewith, can be positioned in any other part than that shown in Fig. 1 as, for example on the tank 5.

yFrom .the `foregoing description, taken inf. drawi connection with the; `'accompanying ings,-the advantage of the'qconstruction and` operation of the device shown will be readily understood by those skilied in the art to whichl he invention pertains; and while I have described the principle vof operation, together with the device which I now consider to be the best embodiment thereof, I

lows in `said chamber, means associated with the bellows and adapted to ymove therewith, a system of levers from said: last-mentioned means to the compressed-air-Dperable meahs whereby said bellows are ladapted to place ative or in inoperative position, a liquid tankfailoat therein associated. with. the system gjlevers, andanair chamber associatedwth the said lsecond tank for varying,"Y the pbstion of said .float whereby the action of said bellows on said compressedair-operable means can (be accelerated or retarded.

'-means for turning` the steam on and o 3.` In al device of the class described, a

water tank,'a 4steam supply for heating the water` in the. tank, compressed air operable from the water, bellows operable by the contraction ornexpanslon of the' air caused by lthe variation' of temperature of the-water.

,inthe tank, and means operable by the atmspheric' temperature, variation including asyetem'pf 'levers' positioned. between the said bellows 'and said compressed air operable means, .substantially as and for the pur- .pse set forth. i "4.In' a .device of the vclass described, a water tank, a .medium for heating the water.

n the tank, compressed air operable means oontrolng the supply of the medium to the tannin' vaves for controlling the supply of compressed air to the Compresseeir operable means, means for operating the valvesvcontrolled by .the temperature varaton of the Wat/er fn the tank, and means operable by the atmospheric temperaturev variation positioned between thevaves and lthe means for onerating the Valves, substan- 10 

